What does hydra mean ?

hy·dra

/ˈhīdrə/

noun

a minute freshwater coelenterate with a tubular body and a ring of tentacles around the mouth.

Explanation:

via Latin from Greek hudra ‘water snake’ (see Hydra), named by Linnaeus because, if cut into pieces, each section can grow into a whole animal

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in 1972 the fluid—mosaic membrane model of membrane structure was proposed based on thermodynamic principals of organization of membrane lipids and proteins and available evidence of asymmetry and lateral mobility within the membrane matrix [s. j. singer and g. l. nicolson, science 175 (1972) 720–731].